Gaussian blur algorithm

Question

I'm trying to implement a gaussian blur algorithm, but my weight function is returning the wrong values

float gauss(int x, int y, float sigma)
{
    float gauss = 100*exp(-(pow(x,2)+pow(y,2)) / (2*pow(sigma,2))) / (pow(sigma, 2)*2*3.14159);
    return gauss;
}

I did it based on this tutorial, and according to them i should get this:

coordinates

correct matrix

Answer 1

我认为你使用sigma = 1.0，你比较的例子使用了sigma = 1.5？